Dr John Henry Chambers was in partnership with Dr Henry Percival Hannay.
Henry Percival Hannay was the younger brother of Ada Joan Hannay, the 2nd wife of George Fothergill,
George Fothergill's 3rd wife was Flora Sexburga Chambers, younger sister of John Henry Chambers.
Henry Percival Hannay's wife was Agnes Mary Fothergill, daughter of George Fothergill by his 1st wife Isabella Eliza Crawshay.
They had no children.